Monographia Loasacearum. 21 



longa, er. 1,5 cm lata, dimidio iisque duplo longiora quam latiova, margine piano crenata v. 

 remotiuscule dentata rigida crassa utiinque pilis brevissimis tuberculatis v. obsolete spinuligeris 

 obsita, suprema sensim v. subito in biacteas transeuntia. Kacemus abbreviatus capituliformis 

 1 — 2 cm crassus 10 — 30-florus; bracteae e basi ovata v. rhombea denticulata v. subintegra 

 lanceolato-acuminatae utrinque brevissime et dense hirtellae 12 — 5 mm longae, inferne 4 — 2 mm 

 latae; pedunculi 3 — 1 mm longi; prophylla bracteis conformia 5 — 2 mm longa, saepius brevius 

 acuminata v. apiculata. Flores plerumque 5-, rarius 4-meri. Calycis tubus ovatus v. ovalis 

 1,3 — 1,5 mm longus, 1 mm crassus, pilis brevissimis apice truncatis, minute retrorsum spinuli- 

 geris albidis densissime scabridus; lobi sublineares 2 — 3,5 mm longi, 0,4 — 0,8 mm lati, margine 

 et extrinsecus patenti-pilosi, pilis minutissime scabriusculis, post anthesin decidui. Petala 

 flava (ex Parry) 6 — 10 mm longa, dorso pilis minutissime scabridis obsessa, intus glabra; 

 nngniculi quam limbus 2 — 2i/.2-plo longiores, 4 — 7 mm longi; limbus 2 — 3 mm longus, 1 — 2 mm 

 latus, ovatus v. subrhombeo-ovatus, margine utroque ad basin versus processibns lamelliformibus 

 in unguiculum decnrrentibus instructus et hoc loco cum vicinis conglutinatus. Filamenta 

 7,5 — ^15 mm longa, corollam superantia; antherae juniores 0,5 — 0,7 mm latae. Stylus 

 10 — 13 mm longus, antheras superans v. parum brevior, apice attenuato obsolete stigmatosus. 



Habitat in America septentvionali civit. California, San Bernardino Co. in 

 montibus 1300 — 2000 m alt.: Parish n. 3756, California australi: Parisli n. 1504, Arizona 

 prope Yucca: Jones n. 3936, 4483. — Subsp. b. in Utah australi: Palmer, Parry n. 75, 

 Nevada, Lincoln County, Vegas Wash: V. Bailey in Death Vall. Exp. n. 1901. 



Flor. m. Maio, Jun. — V. s. in herb. Berol., Boissier-Barbey, CandolL, J. D. Smith. 



4:. Petalonyx crenatus Gray, foliis sessilibus sagittato-lanceolatis basi cordatis 

 apice obtusis 1 — 0,6 cm longis, basi 3,5 — 2 mm latis, 3-plo longioribus quam latioribus, 

 margine revoluto crenatis, inflorescentiis spiciformibus secundifloris, peduuculis special, 

 er. 1,5 mm longis, bracteis triangulari-ovatis usque oblongis, basi obsolete cordatis trun- 

 catis V. obtusissimis crassiusculis viridibus margine integris subintegrisve, prophyllis 

 pinnatifidis; calycis tubo breviter ovato, lobis demum recurvatis; petalis plane liberis 

 5.5 — 7 mm longis sublinearibus; staminibus 2 anticis tantum fertilibus, caeteris brevio- 

 ribus plane anantheris. 



Tabula I. Fig. 36—44. Fig. 36. Bractea. 37. Prophyllum. 38. Flos. 39. Pe- 

 talum. 40. Anthera junior a dorso vis. 41. Anthera effoeta. 42. Pars styli suprema. 

 43. Ovulum. 44. Diagramma (petalis ex aestivatione delin.). 



Fetalonyx crenatus Gray Msc. in Wats. Contr. Anier. bot. in Proc. Ämer. Acad. 

 XVII (n. ser. IX) a. 1882 p. 358; Urb. in Ber. Deutsch, bot. Ges. X. p. 260. t. XIV. 

 f. 3 {Diagr.) 



Suffrutex 15 — 25 cm altus, inferne valde ramosus. Gaules vetustiores usque 6 mm 

 crassi, cortice griseo, superne flavescente obtecti, hornotini virides teretes, pilis brevibus plus 

 minus deorsum curvatis griseo-albidis acuminatis a basi fere ad apicem spinuligeris densissime 

 obtecti. Folia suberecta sessilia sagittato-lanceolata basi cordata apice obtusa 1 — 0,6 cm 

 longa, basi 3,5 — 2 mm lata 3-plo longiora quam latiora, margine revoluto crenata, crassa, 

 supra pube caulis, ad marginem versus et subtus praeterea pilis truncatis brevissime verticiUatim 

 retrorsum spinuligeris obtecta, subito in bracteas transeuntia. Racemus postremo spieiformis 

 inferne laxus, superne densiusculns secundiflorus usque 5 cm longus, rhachi pilis magis patentibus; 



